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Worksheet 555 · Skill 6

Course to steer

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  1. You are at 039°T, 3.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.8 kn. The current sets 131°T at 1.1 kn.

    Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.

    Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).

    Course to steer: ________ °T   Speed over the ground: ________ kn   Time to the mark: ________ min  

  2. You are at 045°T, 2.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.7 kn. The current sets 160°T at 2.5 kn.

    Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.

    Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).

    Course to steer: ________ °T   Speed over the ground: ________ kn   Time to the mark: ________ min  

  3. You are at 074°T, 1.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.9 kn. The current sets 204°T at 0.6 kn.

    Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.

    Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).

    Course to steer: ________ °T   Speed over the ground: ________ kn   Time to the mark: ________ min  

  4. You are at 027°T, 2.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.7 kn. The current sets 044°T at 2.4 kn.

    Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.

    Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).

    Course to steer: ________ °T   Speed over the ground: ________ kn   Time to the mark: ________ min  

  5. You are at 005°T, 1.9 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 6.6 kn. The current sets 008°T at 1.7 kn.

    Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.

    Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).

    Course to steer: ________ °T   Speed over the ground: ________ kn   Time to the mark: ________ min  

  6. You are at 260°T, 1.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.7 kn. The current sets 313°T at 1.2 kn.

    Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.

    Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).

    Course to steer: ________ °T   Speed over the ground: ________ kn   Time to the mark: ________ min  

  7. You are at 054°T, 2.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 148°T at 1.4 kn.

    Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.

    Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).

    Course to steer: ________ °T   Speed over the ground: ________ kn   Time to the mark: ________ min  

  8. You are at 244°T, 1.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.9 kn. The current sets 359°T at 1.8 kn.

    Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.

    Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).

    Course to steer: ________ °T   Speed over the ground: ________ kn   Time to the mark: ________ min  

Practice Sheet No. 1

Practice Sheet No. 1 with the starting fixes of this worksheet 34 41 22 38 29 18 27 44 12 21 19 N VAR 7°W (invented) Heron Sound Heron Point Tern Island Westfield Kittle Gannet Rock Fl W 4s 52ft 14M TR TANK SPIRE STACK Dbn 1 2 3 HS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Border scale: nautical miles (1 nm = 10 ticks) PRACTICE SHEET No. 1 · HERON SOUNDInvented for practice · NOT FOR NAVIGATION · Plotroom Start Start Start Start Start Start Start Start

Answer key

No.AnswersProblem
1Course to steer: 159 °T
Speed over the ground: 8.8 kn
Time to the mark: 32 min
No. 555001 (worked solution)
2Course to steer: 134 °T
Speed over the ground: 14.0 kn
Time to the mark: 17 min
No. 555002 (worked solution)
3Course to steer: 118 °T
Speed over the ground: 6.0 kn
Time to the mark: 33 min
No. 555003 (worked solution)
4Course to steer: 133 °T
Speed over the ground: 10.0 kn
Time to the mark: 31 min
No. 555004 (worked solution)
5Course to steer: 277 °T
Speed over the ground: 6.8 kn
Time to the mark: 48 min
No. 555005 (worked solution)
6Course to steer: 054 °T
Speed over the ground: 6.6 kn
Time to the mark: 52 min
No. 555006 (worked solution)
7Course to steer: 115 °T
Speed over the ground: 8.6 kn
Time to the mark: 28 min
No. 555007 (worked solution)
8Course to steer: 041 °T
Speed over the ground: 13.3 kn
Time to the mark: 24 min
No. 555008 (worked solution)